Railways – Car-carried propulsion system – Electric
Patent
1994-04-06
1995-03-07
Le, Mark T.
Railways
Car-carried propulsion system
Electric
104281, 104294, 318135, H02K 4100
Patent
active
053948076
ABSTRACT:
A power drive system for use in a linear motor propulsion system for powering and propelling a train of a predetermined length along a track. The power drive system includes a plurality of drive coils spaced along the track electrically connected together to form a set of coils. The distance along the track between adjacent coils in a set is greater than the train length. A plurality of sets of coils are interdigitated with each other, with the distance between adjacent coils from different sets spaced closely together to provide that a group of coils, each from different sets is adjacent the train at all locations along the track. The drive system also includes a plurality of inverters, each inverter connected to a set of coils.
REFERENCES:
patent: 4303870 (1981-12-01), Nakamura et al.
patent: 4348618 (1982-09-01), Nakamura et al.
patent: 4454457 (1984-06-01), Nakamura et al.
patent: 5237252 (1993-08-01), Tanaka et al.
Cope and Chambers, "Power Transfer to Transfer to High Speed Vehicles", U.S. Department of Transportation, Federal Railroad Administration, National Maglev Initiative, Jul. 1992.
Thornton, Perreault, and Clark, "Linear Synchronous Motors for Maglev", U.S. Department of Transporation, Federal Railroad Administration, National Maglev Initiative, Jan. 1993.
Raposa, "Assessment of the Power Electronics for the Locally Commutated Linear Synchronous Motor (LCLSM)", U.S. Department of Transportation, Federal Railroad Administration, National Maglev Initiative, Feb. 1993 Final Report.
Le Mark T.
MagneTek Power Technology Systems, Inc.
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